ppoinha writes a project for the ESP32 Cheap Yellow Display (CYD) that functions as a real-time aircraft tracker, rendering a live radar Plan Position Indicator (PPI) on its 2.8-inch touchscreen. The application displays nearby aircraft details such as callsigns and flight levels, provides weather information via Open-Meteo, and includes a built-in web server for remote configuration of location and search radius.
- Utilizes the ESP32's dual-core architecture to handle API calls on Core 0 while maintaining smooth UI rendering on Core 1.
- Integrates data from OpenSky Network for ADS-B states and hexdb.io for ICAO route lookups.
- Features a scrollable list of the five closest flights along with real-time system statistics like WiFi RSSI and free RAM.
- Utilizes the ESP32's dual-core architecture to handle API calls on Core 0 while maintaining smooth UI rendering on Core 1.
- Integrates data from OpenSky Network for ADS-B states and hexdb.io for ICAO route lookups.
- Features a scrollable list of the five closest flights along with real-time system statistics like WiFi RSSI and free RAM.
Tyler August writes that the Cheap Yellow Display (CYD) ESP32 dev boards can be transformed into a Portable Digital Assistant, reminiscent of 1990s Palm devices. Rather than using an emulator, user sau412 developed custom firmware for the CYD that includes features like a Gopher browser, RSS and Wikipedia readers, various games, a BASIC interpreter, a calendar, calculator, contact list, ebook reader, and translator.
- The project can be set up in approximately five minutes using a web-based flasher.
- An SD card is required to test all the available applications.
- This project provides an alternative for those looking for Palm OS-style functionality on modern hardware without needing x86 or ARM emulators like Pumpkin OS.
- The project can be set up in approximately five minutes using a web-based flasher.
- An SD card is required to test all the available applications.
- This project provides an alternative for those looking for Palm OS-style functionality on modern hardware without needing x86 or ARM emulators like Pumpkin OS.
Tim Brookes writes about seven projects you can build with the Cheap Yellow Display (CYD), an affordable ESP32 board with an integrated LCD touch screen that lets you skip soldering and breadboards entirely. The projects span a weather station, a Wi-Fi and Bluetooth penetration testing suite (ESP32 Marauder), a Bluetooth MP3 player, a retro mini TV for videos and games, a Gran Turismo 7 racing dashboard, a Home Assistant music remote, and an ESPHome smart home controller.
- The weather station pulls from both Open-Meteo and OpenWeatherMap and supports a DHT22 sensor for local temperature readings
- The ESP32 Marauder CYD port covers hardware from 1.9-inch non-touch models up to 3.5-inch touch displays
- The retro mini TV is a 3D-printed Simpsons replica combining the Anemoia-ESP32 NES emulator and MiniLegoTV video player
- The GT7 dashboard works because Gran Turismo 7 publishes telemetry over UDP on the local network, a feature shared by other racing simulators
- The CYD Jukebox pairs with Music Assistant to unify local files and streaming services like Apple Music behind one interface
- The weather station pulls from both Open-Meteo and OpenWeatherMap and supports a DHT22 sensor for local temperature readings
- The ESP32 Marauder CYD port covers hardware from 1.9-inch non-touch models up to 3.5-inch touch displays
- The retro mini TV is a 3D-printed Simpsons replica combining the Anemoia-ESP32 NES emulator and MiniLegoTV video player
- The GT7 dashboard works because Gran Turismo 7 publishes telemetry over UDP on the local network, a feature shared by other racing simulators
- The CYD Jukebox pairs with Music Assistant to unify local files and streaming services like Apple Music behind one interface
Jenny List writes that the Cheap Yellow Display (CYD), an ESP32-based board with a resistive touchscreen and SD card slot, can be used to browse Wikipedia offline. By utilizing Kiwix builds processed into a custom format for the ESP32's browser firmware, users can store vast amounts of knowledge on a modern SD card without needing an active network connection.
- Alun Morris developed the project which allows browsing entire offline Wikipedia databases.
- The device is particularly useful for enthusiasts focused on off-grid living or offline data access.
- This builds upon previous work by Morris involving an ESP32 web browser.
- Alun Morris developed the project which allows browsing entire offline Wikipedia databases.
- The device is particularly useful for enthusiasts focused on off-grid living or offline data access.
- This builds upon previous work by Morris involving an ESP32 web browser.
Tanveer Singh:
- microSD desk photo frame
- PC system stats monitor
- Home Assistant dashboard
- Wi-Fi and Bluetooth security tool
- ASCII aquarium
- microSD desk photo frame
- PC system stats monitor
- Home Assistant dashboard
- Wi-Fi and Bluetooth security tool
- ASCII aquarium
Esposito OS is a simple operating system designed for the ESP32 Cheap Yellow Display (CYD). It features dynamic application loading from an SD card and utilizes an event-driven architecture. The system follows a single-tasking, single-app model with a Palm-style lifecycle that allows apps to checkpoint and save their state.
Main points:
- Dynamic app loading via SD card filesystem
- Event-driven architecture using a central queue
- Hardware support for ESP32 CYD (2USB version) and BBQ20 keyboard
- Built on the ESP-IDF framework
Main points:
- Dynamic app loading via SD card filesystem
- Event-driven architecture using a central queue
- Hardware support for ESP32 CYD (2USB version) and BBQ20 keyboard
- Built on the ESP-IDF framework
A Macintosh Plus emulator port designed specifically for the Cheap-Yellow-Display (ESP32) board. This project utilizes umac and the Musashi 68k emulator to provide a functional vintage computing experience on modern low-cost hardware, featuring touchpad emulation for mouse control.
Key features include:
- Homebrew Macintosh applications built with Retro68 such as Weather, WiFi status, and CydCtl for hardware control.
- An IPC (Inter-Process Communication) interface between the Mac emulator and ESP32 via memory-mapped regions.
- Integration with Home Assistant through MQTT to display real-time weather data.
- Support for 240x320 LCD displays with touch capabilities.
Key features include:
- Homebrew Macintosh applications built with Retro68 such as Weather, WiFi status, and CydCtl for hardware control.
- An IPC (Inter-Process Communication) interface between the Mac emulator and ESP32 via memory-mapped regions.
- Integration with Home Assistant through MQTT to display real-time weather data.
- Support for 240x320 LCD displays with touch capabilities.
This Hackaday article details likeablob » 's Denki-Kurage, a desktop electric jellyfish project inspired by Bladerunner. The project utilizes a Cheap Yellow Display (CYD) – a small touchscreen with an ESP32, USB, and SD card socket – to create a visually appealing and interactive desktop piece. The jellyfish’s "swimming" is controlled by adjustable current, adding to the aesthetic. The build is straightforward, involving flashing code via a web flasher, 3D printing a frame, and attaching the CYD. It's a fun and whimsical take on the CYD platform, moving beyond typical control panel applications.
This project details building an escape room lockbox using an ESP32 and a 'cheap yellow display' (CYD). It uses batteries to power a solenoid latch and includes custom software.
SparkMiner is optimized firmware for the ESP32-2432S028 "Cheap Yellow Display" (CYD) board, delivering ~700 KH/s using hardware-accelerated SHA-256 and a pipelined assembly mining loop.
